气候变暖对渭干河三角洲农业的影响

The Influences of Climate Warming on Active-accumulated-temperature (AAT) and Agricultural-planting-system (APS) in Weiganhe Delta

大气中温室气体浓度的增加将使全球气候变暖。本文估算了上述情景下渭干河三角洲≥0℃和≥10℃两种活动积温的变化规律。随着气温的升高，两种活动积温及持续日数也将有所增加。同时还讨论了农业种植制度随积温的变化而作相应调整的可能性。

The two kinds of AAT, titled≥0℃and≥10℃,were calculated under twodifferent climate warming scenarios. in Weiganhe Delta. The two of AATs will enhance tosome extent as anual temperature increase. Meanwhile,the possibility of change of APS inWeiganhe Delta in matching with changed AATs was eliseussed.